One peaceful spring morning in 1906 , the entire city of San Francisco, California, started shaking.
At 5:12am, a foreshock jolted people awake out of their sleep.
25 seconds later, the earthquake sent violent shocks and shaking that ripped the city to pieces.
These shocks were so strong that houses were shifted and moved.
Look at these crazy houses, so crooked, they appear to be tipping over.
On the left is the Pacific Plate, on the right is the North American Plate.
I kind of think of it as where the Earth kind of splits apart.
The San Francisco Earthquake is a result of the plates moving in different directions and crashing into each other.
So many homes were destroyed that over 227,000 people were left homeless.
These people pitched tents and made makeshift neighborhoods in the parks.
They lived like this for over a year.
Check out this family below.
The taller woman sitting above the children looks really unhappy.
Did they all sleep in that one tent?
The Earthquake ripped apart gas pipes and started over 30 fires.
25,000 buildings burned down.
The firefighters didn't really know what to do because the city's Fire Chief, Dennis T. Sullivan had died during the quake.
The fires burned for four days and nights.
Here's a panoramic picture of the city burning.
4 days is a really long time to watch a fire.
I think it's really interesting to learn about big events that happened a long time ago.
History...sometimes it's really cool.